Question

Alguém ajuda aí por favor ,

Answer 1

Resposta:

$\left[\begin{array}{ccc}-10&\frac{-3}{2} &9\\4&6&2\\\frac{21}{4}&5&-1\end{array}\right]$

Explicação passo-a-passo:

$\left[\begin{array}{ccc}-1&-2&3\\2&5&2\\5&0&1\end{array}\right] + \left[\begin{array}{ccc}-9&\frac{1}{2} &6\\2&1&0\\\frac{1}{4} &5&-2\end{array}\right] = \left[\begin{array}{ccc}(-1) + (-9)&(-2)+\frac{1}{2} &3+6\\2+2&5+1&2+0\\5+\frac{1}{4} &0+5&1+(-2)\end{array}\right]\\\\\\=\left[\begin{array}{ccc}-10&\frac{-3}{2} &9\\4&6&2\\\frac{21}{4} &5&-1\end{array}\right]$